package ooday05exercise;

public class Aoo {
    public int a=5;//任何类都可以访问
    protected int b=3;//本类，同包类，派生类可以访问
    int c;//本类、同包类可以访问
    private double d;//本类
    void show(){
        a=1;
        b=6;
        c=3;
        d=9;
    }
}



